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METHODS AND DEVICES FOR EMULATING LOW-FIDELITY CODING IN A HIGH-FIDELITY CODER
METHODS AND DEVICES FOR EMULATING LOW-FIDELITY CODING IN A HIGH-FIDELITY CODER
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机译:在高保真编码器中模拟低保真编码的方法和设备
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摘要
Methods of encoding and decoding video in a low-fidelity mode are described. A coding unit level low-fidelity flag is present in the bitstream to signal whether low-fidelity mode is enabled for a particular coding unit or not. If enabled, then, for that coding unit, the chroma quantization parameter is determined using the luma quantization parameter adjusted by a low-fidelity-mode offset. If not enabled, then, for that coding unit, the chroma quantization parameter is determined using the luma quantization parameter without adjustment by the low-fidelity-mode offset. The chroma quantization parameter is then used in the scaling of quantized chroma transform domain coefficients. Use with luma or other video components is also proposed.
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